The Importance of Optimizing LPR for Better Results

The performance of any automatic license plate reader (ALPR) system relies heavily on the quality of the images and the accuracy of the optical character recognition (OCR) engine. When poor images are run through an OCR—no matter how powerful it is—error rates increase and accuracy rates decline. A number of factors contribute to inadequate image quality from uneven illumination across a lane to incorrect placement and angles of the cameras.